Fastener-feeding mechanism for pulling-over machines



March 31, 1931. K. woLLNY 1,798,292

FASTENER FEEDING MECHANISM FOR PULLING-OVER MACHINES Filed June l0, 1929 Figli- 57 lnvenl'or Patented Mar. 31, 1931 UNITED STATES kxPATH-1T OFFICE KARL WOLLNY, OF WEISSENFELS, GERMANY, AiSSIGNOR TO THE FIRM NOLLESCHE WERKE KOMM.GES., OF WEISSENFELS, GERMANY FASTENER-FEEDING ).VIIEICIEIANISM` FOR PULLING-OVER MACHINES Application led June 10, 1929, Serial No. 369,648, and in Germany February-16, 1929.

The present invention relates to pullingover machines for boots and shoes and more particularly to tack feeding devices for such machines. The pulling-over machines possess 5 as a rule five or nine tacking devices receiving their tacks from a common hopper. The tacks are fed from the hopper through tubes of small diameter to the tacking devices. The diiiculties hereby encountered consist 10 in the first place in the necessity of separating during the operation of pulling-over of a shoe, of five or nine tacks and supplying them to the feeding tubes. The arrangement of five or nine raceways for the tacks and of as many shovel-discs for raising the tacks into the raceways and of a plurality of slots in the separator involves a complicated construction liable to become disturbed inasmuch as the whole separating and feeding apparatus comes to rest if only a single tack is clamped in any of the separating slots. It has therefore been suggested to use a single raceway and a separator with a single separating slot and to move successively a collecting slide underneath the raceway and to allow the tacks collected in separate passages of the slide to fall down simultaneously by an escapement device into the tubes leading to the tacking devices.

The present invention contemplates an improvement of the tack feeding device, having a single raceway. The collecting slide as hitherto known moves for a relatively long way and has to return idle a way of the same length. Now instead of the slide moving to and fro according to the invention a collecting disc is used, which rotates in the same direction. This means an essential simplification of the driving gear. Preferably a Maltese wheel is used for a step-by-step rotation of the collecting disc. Hereby a positive movement of the collecting disc is obtained and the time necessary with the known devices for the return movement is saved.

In the drawings an embodiment of the invention is shown by rway of example.

Fig. 1 is a view of the whole pulling-over machine as for instance shown and described in the U. S. Patent No. 1,688,556 equipped with the new device.

Fig. 2 Vshows on a larger scale an elevation of the separating and feeding device partly in vertical section.

Figs. 3 and 4 are a verticaland a horizontal sectionof the separating and collecting dea vice on a larger scale.

Fig. 5 shows in a plan view the` Maltese gear.

Fig. 6 illustrates in a like view the separatwheels 89', 89". To the shaft 47 is also keyed a disc 48 with a roller 49 adapted to swing F once in every revolution the vknee lever 50, tensioned bythe spring 51. The spring 4l tends to move the slide'24 in one direction in order to separate a'tack from the raceway 9 while the spring 51 is able to move the slide by means of the lever 50 in the reverse direction and' to overcome the spring 41. The separated tack falls through the bore 42 into a bore 8O of the collecting disc 25 which is just underneath the first named bore. The disc 25 has as many bores 30 as there are leading tubes 28. The disc is revoluble on the bolt 52 and the tubes 23 are arranged concentrically to the bolt 52. The bores 30 are closed by a plate 27. The plate 27 engages a short slot 54 of the disc 25 with a pin 53 and is held in closing position by the spiral spring 29. By turning the plate 27 it is possible to bring the openings 27 of the plate 27 in alinement with the bores 8O so as to allow the tacks to fall from the bores 30 into the tubes 23. This turning of the plate 27 is brought about by the co-operation of the cam 28 of the plate 27 with the finger 3l of the lever 48 moved in due order by means of the link 57, the arm 58, the lever 59 and the bar 60 properly connected to the machine-drive as to be acted upon once during every pullingover operation. The disc 25 has teeth on its circumference meshing with the toothed Wheel 55 keyed to the same shaft as the Maltese wheel 56. While the roller 49 operating upon the knee-lever 50 is arranged on the upper side of the disc 48, a roller 49 is arranged on the lower side of this disc. The roller 49 engages the Maltese Wheel 56 which thus receives a step-by-step rotation. This successive rotation is transmitted to the col lect-ing disc 25. The lever 59 has a finger 6l cooperating with the linger 62 of the lever 63 in order to bring the coupling members 46 into engagement and to cause the movement of the hopper l, the separator 24 and the collecting disc 25 as soon as the closing plate 27 has been operated. The drawing shows tWo raceways 9 for shorter and longer tacks. But at any time only one raceway is in operative position.

IVhat I claim is:

In a fastener feeding mechanism for a fastener inserting machine, a tack-hopper, a raceway receiving tacks from the hopper, means for separating single tacks from the raceWay, a disc having a plurality of separate bores and collecting in a step-by-step rotation the separated tacks in its bores, a disc closing the delivering ends of the bores, a plurality of tubes, adapted to receive the tacks from the bores of the collecting disc, means for operating the closing disc once during every cycle of the fastener inserting machine, driven means for driving the hopper, the separator and the collecting disc, driving means for said driven means, and means for coupling the said driving and driven means in timed relation to the operation of the closing disc.

In testimony whereof I affix my signature.

KARL VVOLLNY. 

